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expressjs-framework

When using the expressjs-framework extension, there are four different cases for customising the Ubuntu base and the Node version to be included. The main differences are:

  • whether the bare base is used or the Ubuntu 24.04 base is used.
  • whether Node is installed from Ubuntu packages or the NPM plugin.

Ubuntu base and Node combinations

In this section of the document, we will discuss the possible combinations of Ubuntu bases and possible usages of NPM plugin.

24.04 base and Node from Ubuntu packages

The following example uses the Ubuntu 24.04 base and Node from Ubuntu packages.

base: ubuntu@24.04
extensions:
- expressjs-framework

In this case, the application is installed and run via Node and NPM is installed by the Ubuntu packages. The NPM and Node versions are determined by the versions of NPM and NodeJS shipped with the Ubuntu base. See the NodeJS version shipped with the corressponding Ubuntu base from the chilsel-slices repository. This link to the slices repository is an example of the NodeJS version shipped with the Ubuntu 24.04 base.

24.04 base and Node from NPM plugin

The following example uses the Ubuntu 24.04 base and Node from the NPM plugin.

base: ubuntu@24.04
extensions:
- expressjs-framework
parts:
    expressjs-framework/install-app:
        npm-include-node: true
        npm-node-version: 20.12

In this case, the application is installed and run via Node, and NPM is installed by the NPM plugin.

Bare base and Node from Ubuntu packages

The following example uses the bare base and Node from Ubuntu packages.

base: bare
build-base: ubuntu@24.04

In this case, the application is installed and run via Node and NPM is installed by the Ubuntu packages. The NPM and Node versions are determined by the versions of NPM and NodeJS shipped with the Ubuntu base. See the NodeJS version shipped with the corressponding Ubuntu base from the chilsel-slices repository. This link to the slices repository is an example of the NodeJS version shipped with the Ubuntu 24.04 base. See the NPM version shipped with the corressponding Ubuntu base from the Ubuntu packages archive from the Ubuntu packages search.

Bare base and Node from NPM plugin

The following example uses the bare base and Node from the NPM plugin.

base: bare
build-base: ubuntu@24.04
parts:
    expressjs-framework/install-app:
        npm-include-node: true
        npm-node-version: 20.12

In this case, the application is installed and run via Node and NPM is installed by the NPM plugin. For different possible inputs for npm-node-version, refer to the NPM plugin documentation.